Brake mechanism for mining-cars



F. KRASHOWET'Z.

BRAKE MECHANISM FOR MINING CARS.

APPLICATION FILED MAY I4. 19.!9-

Patented Mar. 9, 1920.

2 SHEETSSHEET 2.

' F. KRASHOWETZ,

BRAKE MECHANISM FOR MINING CARS.

APPLICATION FILED MAY 14. l9l 9.

Patented Mar. 9,1920.

2 SHEETS-SHEET I.

iUNITEDSTATES, PATENT GFFICE.

FRANK KRAs owErz, or EDD'YV-ILLE, IOWA.

Toall whom it may comer rt:

Be it known that I, FRANK Knesnownrz, subject of Austria, residing atEddyville, Rt. #1, in the county of Monroe and State of Iowa, haveinvented certain new and useful Improvements in Brake Mechanism forMining-Cars, of which the following is reference being had to the wisethat the brake shoes of the brake barmay be applied to thewheelsincident to the draw bars coeperating toward each other,

thereby preventing the car's whenin a train from crowding upononeanother, particularly in going down an 111011116.

The invention further aims to provide a brake mechanism of thisl'rindapplicable tominingcars of old style construction, in;

connection with which bumpers are emi ployed, the brake being actuated bth the train is operation of the bumpers, thereby preventing such carsfrom crowding one-anotherinv descending an incline. This style of brakemechanism will actuate on a particularly when a train of cars is beingbrought to a stop after traveling at azrapidj rate of speed,'in vlew ofthe fact that'when in the act of being brought to a stop, the draw barswill cooperate, in

other words abut each other, thereby applying'the brakes.

While the present illustrated and set forth is deemed preferable, it isobvious that as'a result of a the invention to a more practivention maybe susceptible to changes, and

the right to'these changes is claimed, provided they are comprehendedscope of what is claimed.

The invention comprises within the claimed.

In the drawings 'Figurel is a view'in-side elevation of the showing theimproved new style mining car,

applied thereto,- and brake mechanism as also showing an upwardlytilting end: gate.

level grade,

' and engage the coupling provided for the purpose ofcoupling the adacentcars. The draw bars are provided design and construction at furtherfeatures 'and combination-departs, as will be hereinafter set forth,shown in the drawings and i 'rocking in the BRAKE MECHANISM sonMINING-CARS.

g r spe c Letters en I Patented Mar. 9, 1920. Application filed May 14,1919. Serial no. 297,054.

Fig. 2 is a bottom plan view of: the car, more particularly showing thevarious parts i of I the brake mechanism.

Fig. 3 isan enlarged-detail view of one pair of brake shoes and thebrakebar for actuating or urging the shoes toward the peripheries of thewheels.

Fig. 4 is a view in side elevation of an old style mining car, showingaslightly form of the brake mechanism as applied.

Fig, 5 1s a bottom plan view of Fig- 4. Fig. 6 is a detail sectionalview, showing one of the racks {0 and its teeth 41.

@ Fig. 7 'isa detail view of the connections between one of the bellcrank levers '35 and the brake shoe=actuatmg bar,which is car-.-

to the bottom offthe calradjacent the ends thereof are the guides 4: forthe draw bars 5.- The guide v members are recessed, as shown at 6 forthe receptiono'f the draw bars. The draw bars are provided with theusual coupling heads 7, pr'ovided with coupling pins 8, which aredesigned to pass through the openings of the coupling heads links 9,which are withslo-ts 10. it r Secured to the bottom of the car is anelongated metallic strap .11 having eyes 12 at its opposite ends. Chains13 are (2on nected to the eyes '12, and in turn connected to the eyes14: of the inner ends ofthe draw bars, thereby loosely anchoring thedraw bars in position.

The axles 2 are mounted inljournalboxes "15 of the plates 16, whicharesec'uredin any suitable manner to car. --Cap plates 17 are bolted tothe plates '16, and constitute bearings for the brake shoe actuatingbar-18,Jwhichis capable of brake shoe" actuating bar 18" is providedwith-shoulders 19, to prevent ax'ialfmova. ment of the bar, the oppositeendsof which are supplied with when'the actuatlng bar oc i i s the.bottom of the.

bearing cap plates 17 This.

enlargements 20, which,

ingsfcoeperate between the brake I opposite ends order to spread themand cause them to contact with the peripheries of i the car wheels. Adownwardly extending arm 21 is carried by the brake shoe actuating bar 1upwardly extending arm 31 of the rocking of, the car opposite endsthereof.

brake shoe actuating bar. The inner ends of both glevers 26 extendloosely into the slots 10 of the draw bars. To the outer end of theother lever 26 a rod 71 is connected. This rod is in turn connected at72 to the upper end of a lever 7 3, which is pivoted to the side ofthecar. The lower end of the lever 73 has connected thereto a rod 7 4,which in turn is connected actuating bar. It is to be noted that whenpressure is applied to the drawbars incident to the cars crowding towardeach other, the levers 26 will be tilted'on their pivots, therebypulling upon the chain 27 and the rod 28 and the lever 73 which pullsthe rod7 1, at the same time the rod 28 is pulled, thereby rock- 18, andowing to the enlargements 20 becoming positioned horizontally betweenthe brake shoes, the brake shoes are urged toward and into cooperation;

with the peripheries of the car wheels.

The lever 32 is pivoted at'33 to one side near one end. \i The lower endof the lever 82 has connected thereto a chain 34:, which in turn isconnected to the rod 28.

: Bell crank levers 35 are pivoted at 36 to the opposite sides of thecar near the diagonal To one ofsaid bell crank levers 3 5 a rod 37 isconnected, and

which in turn is connected to the lever 32. The other bell crank lever35 is linked or connected as shown at 75 to the lever ,73. It is obviousthat by tilting either one. or both of the bell crank levers by footpressure in'the direction of the arrow a, as indicated in F 1, thelevers 32' and 73 may be tilted upon their pivots imparting a pullingaction upon 6 0 the rods 28'and 74, so as to'rock the brake shoeactuating bar 18. Of rocked, its enlarge course, when this-bar is mentswill become positioned horizontally between the brake shoes and spreadthem 7 f sulficiently to urge them toward the periphcries of the carwheels. Suitable racks 40 shoes, in

The other end of the- By means of this to a second upwardly extendingarm 31 OffllllB rocking brake shoe.

of-the opposite portions upon the rod 71. The rod 71 tilts J the car.

are secured to the opposite sides of the car in diagonal oppositerelation to each other, and these racks are provided with teeth 41, withwhich the long arms of the bell crank levers may cooperate, to hold thebell crank normal position, and since the arms 31 are connected to therods 28 which in turn are connected to the levers 26, the rocking bar 18is limited in its normal position.

The brake shoes 43 are pivotally mounted on the sides of the car uponpins 44. The brake shoes, each consist of an elongated metallic striploop 45, for p The opposite portions of the strip are brought togetherand bolted as at 47. The lower parts of the opposite portions of thestrip extend downwardly, and are bent at 48,

the bent portions extending toward each the reception of the pin 4%.

other, and again bent at 49 and 50. Beyond vthe bends 50 the oppositeportions of the strip extend from each other, and are bent at 51. Theportions 53, of the strip beyond the bends 51 are curved concentricallywith the peripheries of the car wheels, and owing to the extremities ofthese parts 53 being free and unattached, the parts 53 are yieldable. ItListo be noted that the lower parts of the strip, and including theparts 53 constitute the brake shoes. When the enlargements of the actu-Vating bar 18- become positioned horizon-i tally causing the brake shoesto spread, theirparts 53 are urged-yieldably in contact with theperipheries of the car wheels, thereby offering suflicient frictionthereon, to brake the car wheels, hence preventing the cars fromcrowding each other, either on a levelor down-grade. It'is-obvious thatwhen the cars arebeing pulled upgrade, the draw bars operate to actuatethe levers 26, which in turn, restores the actuating bar 18 to itsnormal position, the spring 22'assisting in this regard, hence allowingthe brake shoes to release their frictional contact with the peripheriesof the car wheels. If desired, thebrakes of the cars can be appliedmanually, by operating the bell crank levers.

. A bail member 7 54 has its opposite arms 55 pivoted at 56 bent uponitself to form the V tothe opposite sides of J A second bail member-57has its arms integrally'connected to the arms of the bail member '54, sothat they extend angularly relatively to the arms 55. Atail end gate '58is fixed or connected at' 59 to 'the bail-members, and by means of thebail members, the tail'fend gate of the car body is held in position "atone end of the car. Obviously the bail members may be tilted isdispensed with, and in lieu thereof .of-actuating bars ing the brakeshoes, whereby upwardl so that the tail gate maybe raised, a lowing thecontents of the car to'be dumped or shoveled o Referring to IFigsA and5, that a modified form of brake mechanism is applied'to an old styleminers car." This brake mechanism is considerably similar to themechanism shown in Figs. 1 and 2, with bar 18 a pair 60 is employed.These rocking bars 60 are-axially alined, and have their outer endsprovided with enlargements 62, similar tothose shown in Figs. 1 and 2.The inner ends of the rocking bars 60 are supplied with downwardlyextending arms 63, to which the rods 64 and 65 are connected. Therods 6dare in turn pivotally connected to the levers 66 which are pivot allymounted at 67 to the bottom of the car. Suitable bumper members 68 aremounted in bearings of the opposite ends of the car, that is in diagonalrelation to each other. The rods 69.0f these bumper members areconnected pivotally to thelevers 66; The rods 65 at their outer endsterminate in bumper members 70, which are mounted in the exception thata'single actuating bearings of the oppositeends. ofthe car,

It may be observed that the bumper members, bumper members contactingwith a similar set on an adjacent car, will impart rocking motions tothe rocking bars 60, and owing to their enlargement-s being positionedbetween the brake shoes, the shoes will be urged in yieldable contactwith the peripheries of the car wheels. The mechanism in Figs. 4 and 5may also be actuated manually, by means of bell crank levers andconnections similar to those previously described, hence it is believedunnecessary to repeat the designations and the operation of such parts.

The invention having'been set forth, what is claimed as new and usefulis: v

1. In a brake mechanism, the combination with a pair of adjacent Scarwheels, of a brake member having with yieldable parts, and means forspreadthe yieldable parts may be urged yieldably in frictional contactwith the peripheries of the car wheels, and means actuated by thecrowding action of adjacent cars to actuate the first means for applyingthe brake shoes,

by the actuation of said last mentioned means comprising a transverselydisposed rocking bar, tensionmeans therefor, levers having connectionswith the rocking bar, and draw bars adapted to be actuated by thejamming action of the draw bars with adjacent draw bars and connected tothe levers for OSCll, lating them. I

2. In a brake mechanism, the combination with a pair of adjacent carwheels, of a brake member having brake shoes provided it to-bejnotedthat is one set of,

brake shoes provided ,with yieldable parts, and means for spreadingthe-brake shoes, whereby the yieldable parts may beurged yieldably infrictional contact with the peripheries of the car wheels, and meansmanually actuated for operatingothe first means, said last men-- tionedmeans comprising a rocking bar having enlargements positioned betweenthe brake shoes for spreadingthem, tensioning means for the, rockingbar, levers pivoted on the sides of the car having connections withtherocking bar, and manually oper 'ated bell crank levers connected to thefirst having an enlargement, positioned between the depending separableparts for spreading them, whereby the brake 'shoesmay be appliedfrictionallyon the adjacent peripheries of the car wheels.

4. In a brake mechanism, the combination with .a pair of adjacent carwheels, of a brake member provided with depending yieldable partsadapted to be forced apart,

the lower ends of the yieldable parts terminating in yieldable brakeshoes, said brake member being pivoted to the side of the car body,whereby the depending parts are positioned between the peripheries ofthe car wheels, with the shoes adjacent to and adapt- I ed to be appliedto the peripheries of the car Wheels, when said parts are separated,said brake member being constructed from a single piece of metal, bentto form the op posing depending yieldable parts andthe brake sh oes.

5. In a brake mechanism, the' combination with a pair of adjacentcarwheels, of a brake member provided with depending yieldable partsadaptedto be forced apart, the lower ends of the yieldable partsterminating in yieldable brake shoes, said brake member being pivoted tothe side of the car body, whereby the depending'parts are p0sitionedbetween the peripheries of the car wheels, with the shoeso adj acent toand adapt- :ed to be vapplied to the peripheries of the car wheels, whensaid parts are separated,

said brake member being constructed from a single piece'of metal, bentto form the opposing depending yieldable parts and the brake shoes, andmeans acting between the brake shoes'toseparate the depending parts,whereby the shoes maybe applied to thewheels. 7

V with a 6. In a brake mechanism, the combination with a pair ofadjacentcar wheels, of a brake member constructed from a single strip of springmetal, bent upon itself midway its ends, thereby forming a pivoting eye,means extending through the eye to pivot the member to the means tosecure the opposing bent portions of the sheet metal to each other at apoint beyond the pivoting eye, the portions of the metal beyond thesecuring'means diverging downwardly a short distance, then in wardly atacute angles, then directly clownwardly and in parallelism, therebyconstituting opposing depending and yieldable parts adapted to be forcedapart, the downward parallel portions of the: depending partsterminating in yieldable brake shoes concentric with the car wheels,whereby upon separating the de pending parts, yieldable brake shoes maybe applied yieldably and frictionally in contact with the peripheries ofthe car wheels, and means forforcing apart the depending parts to applythe brake shoes.

7 In a brake meehanism,the combination pair of adjacent car wheels, of abrake member having depending brake shoes adaptedto be forced apart,means for side of the car,

a the rocking suspending the member from the side of the car, wherebythe shoe is positioned between 111g bar having enlargements at eitherend positioned between the brake shoes, whereby upon rocking the bar,the shoes may be applied frietionally in contact with the peripheries ofthe car wheels, means for-'tensioning of the enlargements normallyengaging between the shoes, levers pivoted upon the bottom oi? the carbody at diagonal opposite portions thereof, one end of each of saidlevers having a rod connection with the brake shoe actuating bar, drawbars connected to said levers, and adapted to be ac tuated by thecrowding action of the draw bars and being connected to said levers foractuating them, and means cooperatively connected with said connections,and adapted to be manually manipulated, for apply ing the brake shoes onthe peripheries of the car wheels.

In testimony whereof I- hereunto aflix my signature in the presence oftwo witnesses. V

FRANK KRASHOWETZ- Witnesses i V G. H. EINERs, GEO. ALEXANDER.

bar to hold the narrow portions 7

